Beginning Web Development, Silverlight, and ASP.NET AJAX

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220 CHAPTER 9 ■ .NET 3.0: WINDOWS WORKFLOW FOUNDATION Figure 9-7. Adding an IfElse activity You will see that the left branch of the IfElse activity is flagging an error. This is because the conditions of the IfElse have not yet been set up. Selecting it will take you to the Properties dialog. It will show you that the condition hasn’t been set, and give you the option of adding a code condition or a rule condition (see Figure 9-8). Figure 9-8. Setting a new condition
CHAPTER 9 ■ .NET 3.0: WINDOWS WORKFLOW FOUNDATION 221 Adding a code condition allows you to specify a function that will fire off to evaluate the condition, and a declarative rule allows you to specify a simple rule. In our case, we’re just using a very simple rule, so choose this option. Next, notice that the ConditionName is given a red alert because it isn’t yet set. Change this field to a good name for the rule, such as ageOver100. Once you’ve done this, notice that the alert moves to the ConditionExpression field, as you haven’t yet defined it. Click the ellipsis button (. . .) and the Rule Condition Editor will open (see Figure 9-9). Figure 9-9. Adding the rule condition with the editor Enter the rule this.ageVal > 100, as shown in Figure 9-9. You’ll notice that you have full IntelliSense, which is a nice touch. Click OK and the Rule Condition Editor will close, entering the rule into the Expression property. You’ll also notice that the IfElse node on the Designer now has no alerts, so it is configured correctly. Drag a Code activity to the left branch of the IfElse. This is the path that the sequence will follow if the rule is met (i.e., if the age is over 100). Use the procedures you followed earlier to add an ExecuteCode function to it, and put this code in that function: private void codeActivity1_ExecuteCode(object sender, EventArgs e) { Console.WriteLine("You say you are " + this.ageVal + " years old I don't believe you!"); Console.ReadLine(); } Repeat this process for the right-hand branch of the IfElse activity. When you get to the Properties dialog, wire up the ExecuteCode function as before and then add the following code to it:
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The EXPERT’s VOIce ® in .NET Beg
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Beginning Web Development, Silverli
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Contents About the Author . . . . .
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■CONTENTS ix ■CHAPTER 5 ASP.NET
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■CONTENTS xi ■CHAPTER 11 Ajax A
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■CONTENTS xiii ■CHAPTER 15 Enha
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About the Author ■LAURENCE MORONE
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Introduction This book is aimed at
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PART 1 Building Web Applications
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4 CHAPTER 1 ■ INTRODUCTION TO WEB
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10 CHAPTER 2 ■ BASICS OF WEB DEVE
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38 CHAPTER 3 ■ WEB FORMS WITH ASP
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CHAPTER 4 Data Binding with ASP.NET
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CHAPTER 4 ■ DATA BINDING WITH ASP
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106 CHAPTER 5 ■ ASP.NET WEB SERVI
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CHAPTER 6 Deploying Your Web Site I
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CHAPTER 6 ■ DEPLOYING YOUR WEB SI
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CHAPTER 7 .NET 3.0: Windows Communi
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CHAPTER 7 ■ .NET 3.0: WINDOWS COM
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CHAPTER 11 ■ AJAX APPLICATIONS AN
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CHAPTER 12 AJAX Extensions for ASP.
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CHAPTER 12 ■ AJAX EXTENSIONS FOR
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CHAPTER 13 Ajax Scripts and Service
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CHAPTER 13 ■ AJAX SCRIPTS AND SER
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332 CHAPTER 14 ■ JAVASCRIPT PROGR
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CHAPTER 15 Enhancing the Web Experi
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CHAPTER 15 ■ ENHANCING THE WEB EX
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376 CHAPTER 16 ■ PROGRAMMING SILV
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416 ■INDEX applications. See also
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418 ■INDEX copying web sites, 25
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420 ■INDEX ■H H path language c
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424 ■INDEX Sequential Workflow Co
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426 ■INDEX ■V V path language c
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Beginning Web Development, Silverlight, and ASP.NET AJAX

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